Compounds of hexamethylene-tetramin.



.; Ts erases as NT GFFKQE,

FRIEDRICH BOEDECKER, OF BERLIN-MARIENDO RF, GERMANY SSIGNOR TO THE FIRM v01'! J. D. REBEL AKTIENGE SELLSCHAFT, OF BERLIN-BRITZ, GERMANY.

COMPOUNDS OF HEXAMETHYLENE-TETRAMIN.

1,133,916. No Bracing.

To (ZZZ whom it may concern:

Be it known that I, Dr. Finnomcn Bon- DECKER, subject of the German Emperor, rcsiding at Berlin-lllariendorf, Germany, have invented certain new and useful Improvements Relating to Compounds of Hexamethylene-Tetramin, of which the following is a specification.

The specification of German Patent No. 240612 describes a sulfo-salicylate of hexamethylene-tetramin QG i-Q G S obtained by causing one part by weight of heXamethylene-tetramin to act on two parts by weight of suite-salicylic acid. The said specification also states, that sulfo-salicylic acid yields with more than one equivalent of hexamethylene-tetramin only products which crystallize badly and are diflicult to purify. This assumption has proved to be erroneous; 'as a matter of fact the secondary salt may be obtained as Well formed and durable crystals, if: 2 equivalents of hexamethylenetetramin are caused to acton one equivalent of sulfo-salicylic acid, preferably in alcoholic solution, and also by treating the primary sulfo-salicylate of hexamethylenetetramin with a further equivalent of hexamethylene-tetramin.

E wamples;

1. 7 kilograms of hexarnethylene-tetramin are dissolved in 44 liters of boiling alcohol, and a solution of 5.5 kilos of sulto-salicylic acid in 3.5 liters of hot alcohol is added.

Specification of Letters Patent.

Application filed September 19, 1913.

Patented Mar. 30, 1915.

Serial No. 730,761.

2.14 kilos of hexaniethylene-tetramin,

mixed with 36 kilos of primary sulfo-salicylate 0'5 hexamcthylcnc-tctrainin are dissolyed in just su llicicut water to form a solution, and the solution is filtered if necessary. in excess of alcohol is then added, thereby ohtainin well-formed crystals, which are very easily soluble in Water and-melt at a temperature approaching 180 while assuming a yellow color.

Owing to its easy solubility in water the secondary sulio-salicylate of hexamethylenetctrarnin is more suitable for rinsing pur poses than the considerably less soluble primary salt. In consequence of its low acidity it also causes less irritation than the primary salt, but is very similar to the latter as regards its excellent effect on the dis eased bladder. The secondary salt is especially free from the strongly laxative effect which. the primary salt may produce on persons with a weakened or sensitive stomach.

llhat I claim is:-

1. The process for thcmanufacturcof sec ondary sulfo-salicylate of hexamethylenetetramin, which consists in causing hexamcthyleneflctramin to act on sulfo-salicylic acic in the proportion of two molecules of the former to one molecule of the latter, substantiallysis described.

2. As a new product, secondary snlfosalicylate or" heXamethylene-tetramin having the composition easily soluble in Water, sparingly soluble in alcohol, ether, acetone and chloroform, and IHBltl-Ilgflt a tempia'ature approaching 180 C. while turning yellow, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

4 1m. FRIEDRICH someone:

Witnesses: I

l VALTFER VoLK, MAX Home. 

